CAD中自动求和与自动求面积的解决方案

1、AutoCAD中数值自动求和与多段线自动计算面积和及长度和的解决方案一、 数值的自动求和解决将下方阴影区程序复制，另建文本文档，打开粘贴后另存为“数值求和.lsp”，保存在常用软件备份目录下。在CAD启动完成后在命令行输入“ap”命令，在弹出的“加载/卸载应用程序”对话框中，查找存放的“数值求和.lsp”并点击“加载”，并可在启动组中填加该lsp文件。加载成功后，需要求和时，在命令行输入“sum”命令，然后选择需求和的数值，回车确认后即可在命令行见到求和结果。程序（阴影区全部复制）;=Sum function=( Defun C:Sum( / cmdmode sset ssl nsset te

2、mp ssl1 total) (if *error* quit) ;Exit CAD when error exists (setq cmdmode (getvar cmdecho) ;store the content of cmdecho in variable cmdmode (setvar cmdecho 0); (prompt nSelect numbers : ) (setq sset (ssget) (if (null sset) (progn (princ nError: Nothing selected!n) (princ) ) (progn (setq ssl (sslen

3、gth sset) ; return the length of sset (setq nsset (ssadd) ; construct a new null selections set (while ( ssl 0) (setq temp (ssname sset (setq ssl(1- ssl) ;assign the ss1th member name of sset to temp (if (= (cdr (assoc 0 (entget temp) TEXT) (ssadd temp nsset) ; add temp to nsset ) ) (setq ssl (sslen

4、gth nsset) (print ssl) (princ text entities are found.) (setq total 0) (setq ssl1 ssl) (while ( ssl 0) (setq temp (ssname nsset (setq ssl (1- ssl) (setq number (atof(cdr(assoc 1 (entget temp) (if (= 0 number) (setq ssl1 (1- ssl1) (setq total (+ total number) ) ) (princ nThe Sum of the ) (princ ssl1)

5、 (princ numbers selected is ) (princ total) ) ) (setq cmdecho cmdmode) (princ);=End=二、 面积自动求和及多段线长度求和将下方阴影区程序复制，另建文本文档，打开粘贴后另存为“面积求和.lsp”，保存在常用软件备份目录下。在CAD启动完成后在命令行输入“ap”命令，在弹出的“加载/卸载应用程序”对话框中，查找存放的“面积求和.lsp”并点击“加载”，并可在启动组中填加该lsp文件。加载成功后，需要求和时，在命令行输入“am”命令，然后选择需求和的多段线，回车确认后即可在命令行见到求和结果。程序（阴影区全部复制）(d

6、efun C:am (/ ss l i totalarea ename obj entarea) (if (setq ss (ssget) (progn (vl-load-com) (setq modelspace (vla-get-Modelspace (vla-get-activeDocument (vlax-get-acad-object) (setq l (sslength ss) i 0 totalarea 0 totlength 0) (repeat l (setq ename (ssname ss i) (setq obj (vlax-ename-vla-object ename

7、);(vlax-dump-object obj T)(if (vlax-property-available-p obj area) (setq totalarea (+ (vlax-get-property obj area) totalarea) )(if (= (cdr (assoc 0 (entget ename) MLINE) (setq totlength (+ totlength (ml-length ename) (setq totlength (+ totlength (vlax-curve-getdistatparam ename (vlax-curve-getendpar

8、am ename) (setq i (1+ i) ) (setq text1 (strcat 总面积为: (rtos totalarea 2 4) 平方毫米) text2 (strcat 总长度为: (rtos totlength 2 4) 毫米) ) (if (setq insertpt (getpoint n请输入文字插入点: )(if (setq height (getdist n请输入文字高度:) (setq insertp1 (vlax-3d-point insertpt)insertp2 (vlax-3d-point (polar insertpt (* 1.5 Pi) (* 1.5 height) textobj1 (vla-addtext modelspace text1 insertp1 height)textobj2 (vla-addtext modelspace text2 insertp2 height) ) ) ) )(defun ml-length (ename / j d ptlist) (foreach n (entget ename) (if (= (car n) 11) (setq ptlist (cons (cdr n) ptlist) ) ) (revers